COST OF USING POWER ON WHEAT FARMS IN OREGON TZ 
TABLE 15.—Average cost, years of useful life and depreciation of tractors of 
different sizes, 42 tractors, 1920-1922 * 
| | Annual 
Size of tractor Tractors | Average U et aevie 
Horsepower: Number | Dollars Years Dollars 
TEE Sauk Sa SSR re a es ea Sas oy ee ee 9 898 4.9 | 183 
CD) Eee ES tate See a ee ee en CN. SR SL 4 4, 285 7.4 579 
DO amen en Rye Re eee ee A ee ee es ee 5 4, 340 6. 2 700 
A () Beg poate Seen Sse ee Se ee ee 16 5, 587 6.7 834 
Eyl) aa een Fe ee ee ee See eS 8 5, 412 6.7 808 
1 Certain tractors have been omitted from this table because not purchased new or because of incomplete 
data on the year in which they were bought. 
The first cost of tractors of the same size varied considerably, 
depending on the make of the tractor and the year in which it 
was bought. Tractors of the same size at the present time could 
be bought at appreciably lower prices. 
TOTAL COST OF USING TRACTORS DURING YEARS OF SURVEY 
The total cost of using tractors per year and per 10-hour day 
during each of the three years 1920, 1921, and 1922 is given in Table 
16. The costs for tractors of the same size showed a wide variation, 
depending on the amount of work done, the difference in depreciation 
and repair charges, and the amount of fuel and oil used. In gereral, 
the different items of expense ranked in the following order: Fuel 
and oils, depreciation, repairs, interest, and insurance. 2 
TABLE 16.—Cost per year and per 10-hour day of using tractors of different 
sizes, 42 tractors, 1920; 45 tractors, 1921; 40 tractors, 1922 
| 1920 1921 1922 
| i 
| toy = Cost = Cost = Cost 
: | | B 3 5 
Size of tractor | ao 7 | 5 - Se Rae 
| Ss 2g os S & oS 23 
| | 4 ey eI ge || en & aq a = qs 
Sal ae el pees) Sens 25/8: eo | 6 | 38 $ os 
OES) x lest RS) MLAS) > Tae ee | tS) m ek 
Soles S BS |8)|4 S ees eS lee 5 oS 
aps oi iarl(e|< Ayes po | eis |e a ea 
aber eeee'g | Lec Eb 78 [£3 ie ge ites 
Horsepower: No. Days | Dolls | Dolls. | No.| Days| Dolls. | Dolls. | No.| Days | Dolls. | Dolls, 
NO eae eee eee 9 | 29.6 422 | 14.26 | 10 | 29.2 472 | 16.17 6 | 21.4 343 | 16. 07 
2A) E aesee nes Pe AE Ss 5 | 45.3 |1, 569 | 34. 64 6 | 44.9 | 1,324 | 29.48 6 | 31>7 | 1,069 | 33.272 
Yin JIE Soe en Sc ie Ree emer 4 ) 68.2 |2,196 | 32.21 3 (Ole 22. O58E 33.163 3 | 70.6 | 2,181 | 30.88 
Cl) Rass e 5 2 Cae Soe ONE Rome eee LON SOS 135300 |eo8.648) Til Wied 2.895) | 37. 25) (lb 7d. 21825419)" 133-97 
COU): ae gee SPS IE SAS RE om 3 si9 | 64.3 8,152 | 49.02 | 11 | 51.1 | 2,900 | 56.68 | 10 | 47.1 | 2,437 | 51.70 
AM SIZ eSeihs asses ee Sees 42 | 63.0 |2,359 | 37.44 | 45 | 55.0 | 2,080 | 37.82 | 40 51.8 | 1, 892 36. 55 
ESTIMATED COST OF USING TRACTORS 
Table 17 gives an estimate of the 1923 and 1924 cost of operating 
the average size tractor found on these farms. In arriving at the 
cost of fuel and lubricants, the average quantities used for the three- 
year period 1920 to 1922 were charged at the prevailing prices to 
farmers for the years 1923 and 1924. The prevailing price in 1923 
16386°—26——3 
